Protection mechanism for looms.



1 w. F. DRAPER. PEOTEGTION MECHANISM FOR LOOMS.

APPLICATION FILED 1030114, 1908.

911,219. Patented Feb.2,l909.

.10 m um i V/%\ 2r 1 .9 25 Q 6 L 1724115 I WILLIAM F. DRAPER, or HOPEDALE, MASSAOHUSETTS.

PROTECTION MECHANISM FOR LOOMS.

Specification oi. Letters Patent- Patented Feb. 2, 1909.

Application filed December 14, 1908. Serial N 0. 467,521.

To all whom it may concern:

Be it known that I, WILLIAM F. DRAPER, a citizen of the United States, residing at Hopedale, in the county of Worcesterand.

State of Massachusetts, have invented an Improvement in Protection Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like figures on the drawings representing like parts.

The invention to be hereinafter described relates to protection mechanism for looms, the general function of which is to stop the loom when a shuttle fails to be or is improperly boxed.

In such mechanism as heretofore employed the dagger has been given a movement of more or less amplitude towards and from operative position on each cycle of lay action, and especially has this been the case with protection mechanism operating in conjunction with a shuttle binder with conseuent objections well understood by those s illed in the art.

With the above general facts in view the aims and purposes of the present invention will best be made clear by the following description and accompanying drawings of one form of means for putting the same into practical effect, the true scope of the inven-.

tion being definitely pointed out by; the claims.

In the drawings :Figure 1 is a side elevation of sufficient portions of a'loom having associated therewith the features of the pres ent invention to make clear the relation and operation of parts, the lay and shuttle box being shown in section; Fig. 2 is a top plan view of one end of the lay and its shuttlebox and some of the adjacent devices, the shuttle being shown properly boxed; Fig. 3 is asection on the line 3-3, Fig. 2; and Fig. 4 is a detached detail view, partly in section, showing one form of guide for the dagger controller.

Referring more particularly to Figs. 1 and 2, the lay 1, the front boxlate 2, the cover late 3, and the back wal 4 of the shuttle box, the shipper 5, the knock-off lever 6, and the main portion of the frog 7 may beof wellknown or other desired character. A shuttle binder 8 pivotally and adjustably mounted, as at 9, is provided with a shoe 10, preferably formed of metal, said shoe being movable byor with the binder over the top of a guide 11, secured to the back ortion of the lay as will more fully appear hereinafter.

Supported to bear upon the binder 8 is a spring 12, preferably supported by a bracket 13 through the medium of an adjusting Screw or like device 14, the construction being such that adjustment of the screw 14 will vary the tension of spring action on the binder 8, as will be readily understood.

Mounted in suitable supports carried by the lay 1 is the dagger rod 15, carrying a dagger 16, the nose 17 of which is adapted to engage the shoulder 18 of the frog 7 and move said frog when said dagger is permitted to drop on the forward movement of the lay, as usual. A spring 19, Fig. 2, normally tends to turn the-dagger rod 15 to cause the dagger to assume its dropped or frog engaging position.

Extending from the dagger rod 15 is the arm 20, which, with the rod 21 pivotally connected thereto, constitutes one form of controller for controlling the position of the da ger as determined by the binder 8, as wil presently appear. The controller rod 21 extends upward from the arm 20 into the guide 11, said guide 11 being so formed as to permit movement of the end of rod 21 in a direction corresponding to the general direction of binder movement, as the latter turns about its pivotal connection 9. To this general end the guide 11 is provided with an elongated slot 22, Figs. 2 and 1, preferably open at its outer end, as shown, though this is not essential, and the controller rod 21 has a spring 23 acting thereon andtending to maintain the end of the controller rod 21 in the part of the'slot 22 nearest the shuttle box, as indicated in Fig. 3.

The frog 7 is provided with a riser 24 and a dagger support 25, which cooperates at timeswitha shoe 27, Fig. 1, adjustably mounted on the dagger 16, by suitable means, as the bolt-28, said shoe. 27 preferably extending, as at 29, to constitute a stop for limiting the upward turning movement of the dagger by contacting with the bottom of the lay 1.

If it be assumed that the loom has been stopped by the protector mechanism and is to be again started, the shoe 27 will, on the backward movement of the lay, ride up the riser 24, lift the dagger, and lower the controller, so that when the shuttle enters the box the binder will be moved outward and the shoe 10 will move over the end of the controller rod 21, thus maintaining the dagger in raised or inoperative position as the lay moves forward to beat up. As the lay again moves to the rear, the shoe 10 continues in position over the end of the eon troller rod 21 until the shuttle is picked, which takes place when the lay has carried the dagger to position the shoe 27 above the dwell or support 25 of the frog. Thus as the shuttle moves through the shed and the end of the controller rod 21 is uncovered by the inward movement of the binder, the dagger is still held in its inoperative or raised position by the shoe 27 riding over the dwell or support 25, and when the shuttle passes into the box on the other side of the loom, the shoe 10 of that binder moves over the end of the controller rod 21 at that end of the lay, and, as the lay moves forward, prevents the controller rod 21 on that end of the lay from rising, thus the dagger continues to be held in its raised or inoperative position so long as the loom continues in normal working condition.

It is to be noted that the dagger is not raised and lowered on each round of lay movement, as heretofore, but, under normal working conditions when the shuttle is properly boxed 011 each pick, the dagger remains in its raised or inoperative position, and is only lowered or moved therefrom when a shuttle fails to be or is improperly boxed.

From the construction and operation of the loom and its protection mechanism as above outlined, it will be noted that more or less wear is liable to occur between the lower surface of the shoe 10 on the binder and the top of the controller rod 21, but by providing the controller rod with capacity for motion with the binder, it will be evident that after the end of the rod 21 is in contact with the shoe 10 and is sustaining; the tension of the dagger rod spring 19, thereby holding the dagger in raised position, any outward movement of the shoe or binder will cause the controller rod 21 to turn on its pivotal connection with the arm 20 and move with the shoe or binder, thus preventing any inj urious wear or scoring of the parts as might result by sliding one on the other while forcibly held in contact.

Should it be desired to move the binder by hand at any time, the construction is such that no material resistance is offered to such movement by the controller rod, because if the controller rod be raised and in the path of the binder or its shoe said rod may yield to outward movement of the binder; or if said rod is, at the time, bearing against the'under surface of the shoe or binder, it will move about its pivotal connection with the arm 20,

as thebinder is moved outward, thus avoiding wear such as might occur if the shoe were moved across the end of the controller.

What is claimed is:

1. In a loom, the combination of a lay, a shuttle box and its binder, protection mechanism including a dagger, a dagger controller, and means including the binder and dagger controller for holding the dagger in inopbrative position during the cycle of lay movement, said dagger controller having a member movable with the binder without affecting the position of the dagger.

2. In a loom, the combination of a lay, a shuttle box and its binder, protection mecle anism including a dagger, and a dagger controller having a member adapted to contact with the binder to hold the dagger in inoperative position when a shuttle is properly boxed, said member being movable with the binder and permitting the dagger position to be un altered by such movement.

3. In a loom, the combination of a lay, a shuttle box, protection mechanism including a dagger, means moved by the shuttle as it is properly boxed to prevent movement of the dagger to operative position, and a member connected to the dagger and movable with said means while permitting the dagger position to remain unaffected by said movement.

4. In a loom, the combination of a lay, a shuttle box at each end of the lay, binders for said shuttle boxes, protection, mechanism including a dagger, and a dagger controller having a member movable in a direction crossing the plane of movement of a binder as the dagger moves to operative position, said binder pr venting such movement of the dagger when the shuttle is properly boxed, and said member being movable with a binder without changing the position of the dagger.

5. In a loom, the combination of a la and shuttle boxes, protection mechanism including a dagger, means normally tending to move the dagger to operative position, a dagger controller, and a shuttle binder movable over the end of the controller as a Cir shuttle is properly boxed to prevent movej.'

ment of the dagger to operative position,

said controller being movable with the binder and protection mechanism including a dagger, a dagger controller, a guide on the lay for said dagger controller directing the same to move into contact with a binder when said binder is moved outward from the shuttle box, and permitting said dagger controller to move with the binder after said contact is established.

8. In a loom, the combination of a lay, a shuttle box, a binder therefor, protection mechanism including a dagger, a dagger controller including a rod, and a slotted guide on the lay for guiding said rod into contact with the binder to thereby prevent move? ment of the dagger to operative position and permitting said rod to move with the binder.

9. In a loom, the combination of a lay, a shuttle box, a slotted guide, a shuttle binder -movable over said slotted guide, and protection mechanism, including a rod movable in said guide towards the binder and movable in said guide with the binder.

10. In a loom, the combination of a lay, a shuttle box, a slotted guide, a shuttle binder movable over said slotted guide, and protection mechanism, including a spring actuated rod movable in said guide towards the binder and movable in said guide with the binder.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WILLIAM F. DRAPER.

Witnesses:

WM. ARTHUR DEXTER, WM. H. TAYLOR. 

